Coleoptiles are the growing part of shoots in monocot plants. Peter Boysen-Jensen performed the famous experiment on phototropism of shoots in monocot plants. Later, Frits Went extended the experiments. Some of the essential observations of their experiments are listed below: I. Shoots of young rice plants bent in response to light. II. If the tip of a growing rice coleoptile was removed, the response of bending towa